In House M.D., what fictional medical condition does Dr. House use a cane to manage?

In House M.D., Dr. House uses a cane because of avascular necrosis in his right thigh muscle.

The condition develops after an infarction cuts off blood supply to the muscle, causing tissue death and permanent damage. House’s leg pain and limp are central parts of his character, and he relies on a cane while continuing to diagnose patients.

The show explains that House experienced the infarction before the series begins. He initially receives treatment that includes surgery, but the consequences remain. His chronic pain contributes to his dependence on Vicodin, a storyline that becomes increasingly important as the series progresses.

Avascular necrosis is sometimes confused with a bone disorder because the term is also used for osteonecrosis, but House’s specific fictional injury concerns muscle tissue in the thigh. The series uses his disability as both a medical detail and a recurring visual symbol of his physical vulnerability.

House’s leg condition is not Parkinson’s disease, multiple sclerosis, or rheumatoid arthritis. Those illnesses are separate disorders with different causes and typical clinical features.